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Finding the Fourth Proportional to 43,858.88, 65,799.12 and 12,693.68

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Solution

The fourth proportional to 43,858.88, 65,799.12 and 12,693.68 is: 19,043.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,858.88 : 65,799.12 = 12,693.68 : x
  2. Step 2: Convert to fraction form
    43,858.88/65,799.12 = 12,693.68/x
  3. Step 3: Cross multiply
    43,858.88x = 65,799.12 × 12,693.68
  4. Step 4: Simplify right side
    43,858.88x = 835,232,973.56
  5. Step 5: Solve for x
    x = 835,232,973.56/43,858.88
  6. Step 6: Final answer
    x = 19,043.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.